Home / 18,422.40-25,439.76-13,415.52

Finding the Fourth Proportional to 18,422.40, 25,439.76 and 13,415.52

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Solution

The fourth proportional to 18,422.40, 25,439.76 and 13,415.52 is: 18,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.40 : 25,439.76 = 13,415.52 : x
  2. Step 2: Convert to fraction form
    18,422.40/25,439.76 = 13,415.52/x
  3. Step 3: Cross multiply
    18,422.40x = 25,439.76 × 13,415.52
  4. Step 4: Simplify right side
    18,422.40x = 341,287,609.08
  5. Step 5: Solve for x
    x = 341,287,609.08/18,422.40
  6. Step 6: Final answer
    x = 18,525.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.